 After promotion Seddon was key in helping the club gain a play-off spot in their first season in the top-flight non-league league where they lost to play-off winners AFC Wimbledon in the semi-finals.In 2011–12 Seddon became one of Fleetwood's top scorers, being a super-sub after scoring several goals from coming on as a substitute.During his time at Fleetwood Seddon played with now England international Jamie Vardy.